Go to smart view and you should see the option... on your laptop/computer, Win+P is the shortcut to open "connect to wireless display" select "Extend". . You can also use Samsung Second Screen app on your laptop... . You laptop and mobile should be on same WiFi network . . . I would prefer a bigger display like a Tab
Go into smartview settings, you will see two options , one to caste mobile to other devices and another is another devices to mobile. Based your preference select the option
